Machine for converting pulp into sheets.



H. G. ROGERS.

MACHINE FOR CONVERTING PULP INTO SHEETS. APPLICATION FILED 1AN.13,1917.

1,223,905.,- Pmented Apr. 24,1917.'

3 SHEETS-SHEET 1.

-j PPumTmu man JAN. 13. 19u.

Paf/@umd Apr. 24,1917.

a SHEETS-snit? 2.

H. G. ROGERS.

MACHINE FOR CONVERTING PULP INTO SHEETS.

APPLICATION FILED JAH. I3. 19H- Lg. Patented Apr. 24,1917.

3 SHEETS-SHEET 3.

A carrying,f out my invention.;

` machine corresponding; with unrrnn 'HENRY RGERS, Gl" SABLE NEW' YGEK.

messes.

Zl; all fin/iam, it may @crecer/1a:

Be it -lnown that l, l-lnnnr G. Roenes, a citizen of the United States, and a resident of Au Sable Forks, in the county of Essex and State of New York, have invented a new and Improved Machine for' Converting Pulp Into Sheets, of which the :following is a full, clear, and exact description..`

My presentI invention is intended more particularly as an improvement on the niachine for which a patent was granted to nie 0n October 10, 1911, No. 1,005,655, said'nia- Chine being for the purpose of forming paper or other pulp into sheets, and deli ing thesame in a partially dry statel The patented machine referred to is distinguished by squeezing rollers driven at a predetermined rate and tension-breaking rollers driven at a relatively higher rate, together with means so acting on the pulp as to weaken the 'same on transverse lines whereby a sheet will be severed by the .relativ y higher speed of the breaking rollers.- In the patented construction the `pulpgathering cylinder has longitudinally disposed members thereon, which produce thinner and consequently weaker lines the sheets of pulp as the same is gathered by the cylinder.

ln vmy present invention l produce the weakened lines hy means of a greove in one of the final pair or" squeezingrollers, where by the grooved portion of the roller will leave the sheet wet along the line of the groove, thereby causing the sheet to'readily part at this line in response to the higher Speed of the breaking rollers. The present invention comprises also washingl nic-ans for one or" the aprons fori/ninel part of the machine.

The invention will be vparticularly explained in the specific description following. Reference is to be had to the accom l)any- -ing-drawings forming a part of this speoili- 45.

cation inI which similar reference characters indicate corresponding parte in all the views.

Figures 1 'and 2 represent together a central longitudinal section of a machine for The machine illustrated corresponds in the main with thatillustrated in'iny patent above mentioned, and embodies in its construction suitable supporting trainee coinprising the side frames 5, 5,' conf Application filed January S, 1915.

Specification of Letters Patent.

Patented Apr.. 2d, 1917., sensi no. leases.

' cylinder gathers in its rotation within'the vat. ln accordance 'withniy present invention l produce v'ez'ilzened lines in the pulp by reason of u longitudinal groove or grooves 9 in one of the rollers of the linal pair of squeezing rollers hereinafter referred to. `@ne or several grooves 9 will be .produced according to the desired length of sheets.'

i @ne of the journals 10 of the pulp-gather ing Cylinder is made hollow and is connected to the sewer or other/.shitable point of discharge for carrying off the waste water which is strained bythe screen from the pulp.

Sonie distance in advance of and elevated above the pulp vat G are -iournaled one above the other in suitable bearings carried by the side frames 5, 5, squeezing rollers 11, 11; also likewise, mounted between the vatand the rollers ll, is a relatively smaller pair i' squeezing" rollers l2, l2, the bearings of the npr er rollers 11 and 12 or" each pair of squeezing' rollers being vertically adjustable on vertical guides 13 and 1st respectively, and normally pressed to the rollers below by suitable means, such as the levers l5 and 16, 'ulcrurned at their inner ends 'to a part of 'the iframe structure and at an intermediate point to their respective adjustable bearings. The squeezingr rollers l2 are shown in Fig. 5 to be arranged at a slightly lower level than the squeezing rollers 11; and at i apron 30 passes around the lower squeezing rollers 11 and 12 and around the pressing roller 21 and guide rollers 22, 23, 26, 27 and 28, and also bears on the guide rollers 24 and 25, the latter being adjustable to control the tension on the belt.

In advance of the squeezing rollers 11,

and at a much lower level are siinilarlyarranged squeezing rollers 31, 31, and forwardly of these rollers a fourth pair of squeezing rollers 32, 32, the bearings of the upper squeezing roller 31 being vertically adjustable by hand-screws 33, and yieldingly pressed toward the lower roller 31 by springs 34. rlhe bearings of the squeezing rollers 32 are shown to be mounted on. vertical guides 35 and pressed downwardly by levers 35, similarly to the squeezing rollers 11 and 12, the lever 36 being shown to be operatively connected by a link 37 to a lever 38, which in turn is connected by a link 39 to an operating lever 40, thus adording a compound lever mechanism for forcing the upper squeezing roller 32 to the squeezing roller below. immediately at the front of .and slightly below the guide roller 28 is a,

guide roller 41, and between the squeezing rollers 31 and 32, and located substantially above a line connecting their points of contact, is a guide roller 42. 'A guide` roller 43 is positioned in advance of and at the same upper peripheral level of the lower squeezing roller 32, and below this roller is a guide roller 44. Belt-tightening and guide rollers 45 and 46, and a guide roller 4'? complete a system of rollers for directing an apron orbelt 48, the belt extending around the lower squeezing rollers 31 and 32, and the guide rollers41, 43, 44 and 46, with the outer side of the apron passing about the rollers 45 and 47, the roller 45 being adjustable `to control the apron tension.

In advance of the forward squeezing rollers 32, and with their peripheral porv'tions at substantially the saine level, are

tension breaking rollers 49, 49, the upper roller being journaled in bearings vertically adjustable on vertical guides 50, and yieldingly pressed toward the lower rollers by screws 51l and intermediate springs 52. immediately at the front of the guide roller 43 is a guide roller 53, over which is located a pressing roller 54. A guide roller 55 ln- Leanser tem of rollers which direct a fourth belt or apron 56, the latter passing around the guide rollers- 53 and 55 and about the squeezing roller 49. Atable 57 for receiving the sheets is shown to be downwardly and outwardly inclined from the machine frame just below the forward guide roller 55. 4

Suitable driving means is provided for the several rollers as described inr my patent above referred to, and the arrangement is such that the tension breaking rollers 49 revolve at a relatively greater peripheral speed than that of the final squeezing rollers 32. The longitudinal groove 9 in one of the said squeezing rollers 32 leaves the pulp at the groove or grooves wetter than the reinaining portion and therefore weaker` to withstand the pull due to the higher speed of the rollers 49 so that a sheet of pulp will be severed at the said weakened line. The result is accomplished without in any way varying the formation of the sheet of pulp in the gathering of the same on the cylinder so that a uniformly smooth sheet results. A marked advantage also is that it is found practical to weaken even very thin sheets of pulp.

he numeral 66 indicates nozzles for trimming and cutting the pulp in a manner described in my patent referred to.

ln my patented construction, the belt 29 runs between the pairs of rollers 11, 12, about rollers 17, 18 and over a roller 19. In

- my present construction a second roller 19a `belt 29 and the same runs from the roller 19a upwardly over a guide roller 70 at the front of a washing vat 63 and downwardly into said v at about a roller 69 therein, the b elt returning between rollers 67 at the front of the vat, downwardly and about the roller 18, then between the pairs of rollers 12, 11, in succession to co-act with the belt 30 in carrying the pulp, about a roller 17 and returning over the upper roller 11 and the roller 19 to the roller 19. In the vat 68 is a revolving whipper 7 2 to whip the belt, said whipper being in driving engagement with the belt. In practice the vat 68 is supported in any suitable manner.

Having thus described my invention claim as new, and desire to secure by Letters Patent:

1. In a machine for forming pulp into sheets, squeezing means including a roller having a longitudinal groove presenting@ non-squeezing line to produce-a relatively weakened line with, moisture .f

ias

having versely of the sheet, and tension-breaking rollers beyond the said rst roller to exert breaking action on the web et the weakened line.

2. In a, I nachine for forming pulp into sheets, squeezing means including a roller a longitudinal groove presenting a non squeezing line to produce a relatively weakened line with excess moisture transversely of the sheet, in combination with tension breaking rollers driven at a rela tively roller. 

